Cheap Flights from London Stansted to San Francisco International

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Compare London Stansted to San Francisco International flight deals

Find the cheapest month or even day of the year to fly to San Francisco International

Book the best San Francisco International fare with no extra fees

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Flight deals from London Stansted to San Francisco International

Looking for a cheap last-minute deal or the best return flight from London Stansted Airport to San Francisco International Airport? If you want to travel next month, return fares start from $1,261. Find the lowest prices on one-way and return tickets right here.

San Francisco.$1,261 per passenger.Departing Sun, 15 Nov, returning Sun, 22 Nov.Return flight with Ryanair and Scandinavian Airlines.Outbound indirect flight with Ryanair, departs from London Stansted on Sun, 15 Nov, arriving in San Francisco International.Inbound indirect flight with Scandinavian Airlines, departs from San Francisco International on Sun, 22 Nov, arriving in London Stansted.Price includes taxes and charges.From $1,261, select.

San Francisco.$1,337 per passenger.Departing Wed, 25 Nov, returning Wed, 2 Dec.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Wed, 25 Nov, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Wed, 2 Dec, arriving in London Stansted.Price includes taxes and charges.From $1,337, select.

San Francisco.$1,368 per passenger.Departing Wed, 11 Nov, returning Tue, 2 Feb.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Wed, 11 Nov, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Tue, 2 Feb, arriving in London Stansted.Price includes taxes and charges.From $1,368, select.

San Francisco.$1,389 per passenger.Departing Mon, 11 Jan, returning Mon, 18 Jan.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Mon, 11 Jan, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Mon, 18 Jan, arriving in London Stansted.Price includes taxes and charges.From $1,389, select.

San Francisco.$1,398 per passenger.Departing Mon, 25 Jan, returning Tue, 9 Feb.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Mon, 25 Jan, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Tue, 9 Feb, arriving in London Stansted.Price includes taxes and charges.From $1,398, select.

San Francisco.$1,423 per passenger.Departing Thu, 22 Oct, returning Mon, 2 Nov.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Thu, 22 Oct, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Mon, 2 Nov, arriving in London Stansted.Price includes taxes and charges.From $1,423, select.

San Francisco.$1,480 per passenger.Departing Mon, 7 Dec, returning Fri, 11 Dec.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Mon, 7 Dec, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Fri, 11 Dec, arriving in London Stansted.Price includes taxes and charges.From $1,480, select.

San Francisco.$1,482 per passenger.Departing Sat, 31 Oct, returning Sat, 5 Dec.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Sat, 31 Oct, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Sat, 5 Dec, arriving in London Stansted.Price includes taxes and charges.From $1,482, select.

San Francisco.$1,483 per passenger.Departing Tue, 15 Dec, returning Wed, 13 Jan.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Tue, 15 Dec, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Wed, 13 Jan, arriving in London Stansted.Price includes taxes and charges.From $1,483, select.

San Francisco.$1,484 per passenger.Departing Wed, 17 Feb, returning Sun, 21 Feb.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Wed, 17 Feb, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Sun, 21 Feb, arriving in London Stansted.Price includes taxes and charges.From $1,484, select.

San Francisco.$1,511 per passenger.Departing Sun, 28 Feb, returning Sat, 6 Mar.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Sun, 28 Feb, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Sat, 6 Mar, arriving in London Stansted.Price includes taxes and charges.From $1,511, select.

San Francisco.$1,525 per passenger.Departing Sun, 7 Mar, returning Sun, 14 Mar.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Sun, 7 Mar, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Sun, 14 Mar, arriving in London Stansted.Price includes taxes and charges.From $1,525, select.

San Francisco.$1,531 per passenger.Departing Sun, 8 Nov, returning Sat, 30 Jan.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Sun, 8 Nov, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Sat, 30 Jan, arriving in London Stansted.Price includes taxes and charges.From $1,531, select.

San Francisco.$1,557 per passenger.Departing Tue, 11 May, returning Tue, 25 May.Return flight with Ryanair and Iberia.Outbound indirect flight with Ryanair, departs from London Stansted on Tue, 11 May, arriving in San Francisco International.Inbound indirect flight with Iberia, departs from San Francisco International on Tue, 25 May, arriving in London Stansted.Price includes taxes and charges.From $1,557, select.

San Francisco.$1,592 per passenger.Departing Mon, 12 Oct, returning Mon, 19 Oct.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Mon, 12 Oct, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Mon, 19 Oct, arriving in London Stansted.Price includes taxes and charges.From $1,592, select.

San Francisco.$1,605 per passenger.Departing Mon, 26 Apr, returning Fri, 30 Apr.Return flight with Ryanair and Aer Lingus.Outbound indirect flight with Ryanair, departs from London Stansted on Mon, 26 Apr, arriving in San Francisco International.Inbound indirect flight with Aer Lingus, departs from San Francisco International on Fri, 30 Apr, arriving in London Stansted.Price includes taxes and charges.From $1,605, select.

Find the cheapest month to fly from London Stansted to San Francisco International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Stansted to San Francisco International flights are currently cheapest in November.

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London Stansted to San Francisco International: Alternative routes

Compare routes from London Stansted to San Francisco below. You may find an airport to fly into that's cheaper, faster, or easier than San Francisco International.

London to San Francisco: Flight information

The things to know before you go.

Cheapest flight found	$1,261
Cheapest month to fly	November

Finding cheap flights from London Stansted to San Francisco International: Frequently asked questions

How much are return flights from London Stansted to San Francisco International?

The best price we found for a return flight from London Stansted to San Francisco International is $1,261. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from London Stansted to San Francisco International?

Currently, there are no airlines that fly direct from London Stansted to San Francisco International. But we found flights with one or more stops from $1,261.

How many flights are there a week from London Stansted to San Francisco International?

As of October 2026, there are no flights flying from London Stansted to San Francisco International.

When is the cheapest time to fly from London Stansted to San Francisco International?

The cheapest month to fly from London Stansted to San Francisco International is usually November.

Which upcoming date is cheapest to fly from London Stansted Airport to San Francisco International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Stansted Airport to San Francisco International Airport on Sunday, 15 November 2026.

Can I get a direct flight from London Stansted Airport to San Francisco International Airport?

No airlines currently offer direct flights between London Stansted Airport and San Francisco International Airport. Most routes have one or more stops.

How can I find the best flight deal to San Francisco International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Francisco International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to San Francisco?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from London Stansted Airport to San Francisco International with?

Currently, Ryanair offers the cheapest flight tickets to San Francisco International.

Travelling from London Stansted Airport (STN) to San Francisco International Airport (SFO): what you need to know

The timezone in San Francisco is UTC-8, which is eight hours behind London.
Your STN to SFO flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
During popular months like August, it's a good idea to get to the airport well in advance. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during a high season in general.
Think about adding a stopover when booking your ticket from London Stansted Airport to San Francisco International Airport. Simply uncheck 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here are some options between STN and SFO:
- Amsterdam Schiphol Airport
- Copenhagen Airport
- Dublin Airport

How to find the cheapest flights from London Stansted Airport (STN) to San Francisco International Airport (SFO)

$779 is currently the lowest price for a one-way London Stansted Airport to San Francisco International Airport flight. Return flights start at $1,261. These fares can change depending on availability.
To get your hands on cheap tickets from STN to SFO, book early. Airlines tend to offer their best fares when flights are first released.
The 'Whole month' search function shows you the cheapest flights from London Stansted Airport to San Francisco International Airport across each month. It's a great way to find a bargain if your dates are flexible.
Save time searching for cheap flights from STN to SFO by setting up a Price Alert. We'll send you an email or push notification on the app when a lower fare pops up.
Choose your ideal arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from London Stansted Airport to San Francisco International Airport.

Handy information about London Stansted Airport (STN)

London Stansted Airport maintains a strong on-time record, so you're less likely to experience disruptions. Departures from STN arrive on schedule 80% of the time.
Central London to London Stansted Airport is around 56 kilometres. Depending on traffic, it'll take about 1 hour 5 minutes to get there if you're ride-sharing, catching a taxi or driving.
The trip on public transport takes roughly 45 minutes.
Looking for a convenient hotel close to STN? If you're catching an early flight from London Stansted Airport to San Francisco International Airport, these stays will have you sleeping moments from your check-in counter:

Arriving at San Francisco International Airport (SFO)

The last thing you need is a lengthy journey to your hotel if you're getting in late on a London Stansted Airport to San Francisco International Airport flight. Book one of these accommodation options near SFO instead:
Grab a San Francisco International Airport rental car and discover San Francisco and beyond with your own wheels. Dollar, Thrifty and Hertz are leading providers to choose from here.
Lock in the best possible rate by reserving your vehicle from San Francisco International Airport around one week ahead of your trip.

Getting from San Francisco International Airport (SFO) to central San Francisco

San Francisco International Airport to the centre of San Francisco has a drive time of around 25 minutes. It's approximately 21 kilometres away.
It'll take around 35 minutes if you're using public transport.

When to fly to San Francisco International Airport (SFO)

It's time to work out your trip dates for your flight from London Stansted Airport to San Francisco International Airport. July is the most popular month to head to San Francisco. If you'd like a quieter vibe, go in March.
The warmest month in San Francisco is September, with temperatures ranging between 12ºC and 24ºC. Lock in your flights from London Stansted Airport to San Francisco International Airport in this month if this is the kind of weather you like.
If you want cooler conditions, look for a cheap ticket from STN to SFO in January. Average temperatures are between 5ºC and 16ºC then.

Explore more of the United States

You've visited San Francisco, now it's time to explore more of the United States. Journey around 64 kilometres south-east to San Jose to check off its leading attractions. From Winchester Mystery House to The Tech Interactive and Santa Clara Valley, there's plenty to keep you busy.
Around 257 kilometres south-east of San Francisco, Fresno is another essential stop in the United States. Start your sightseeing at Forestiere Underground Gardens, Shinzen Japanese Garden and Fresno Chaffee Zoo.